Results 11 to 20 of about 462,203 (338)

Chancen und Herausforderungen in ländlichen Räumen durch Digitalisierung

open access: yesRaumforschung und Raumordnung, 2022
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Gabriela Christmann, Ariane Sept
doaj   +1 more source

IRS-Assisted Secure UAV Transmission via Joint Trajectory and Beamforming Design

open access: yesIEEE Transactions on Communications, 2022
Despite the wide utilization of unmanned aerial vehicles (UAVs), UAV communications are susceptible to eavesdropping due to air-ground line-of-sight channels.
Xiaowei Pang   +5 more
semanticscholar   +1 more source

Physical layer security techniques for data transmission for future wireless networks

open access: yesSecurity and Safety, 2022
The broadcast nature of wireless communication systems makes wireless transmission extremely susceptible to eavesdropping and even malicious interference.
Shi Weiping   +9 more
doaj   +1 more source

Near-IR & Mid-IR Silicon Photonics Modulators

open access: yesSensors, 2022
As the silicon photonics field matures and a data-hungry future looms ahead, new technologies are required to keep up pace with the increase in capacity demand. In this paper, we review current developments in the near-IR and mid-IR group IV photonic modulators that show promising performance.
Georgi V. Georgiev   +7 more
openaire   +4 more sources

Active-Passive IRS Aided Wireless Communication: New Hybrid Architecture and Elements Allocation Optimization [PDF]

open access: yesIEEE Transactions on Wireless Communications, 2022
Intelligent reflecting surface (IRS) has emerged as a promising technology to enhance the wireless communication network coverage and capacity by dynamically controlling the radio signal propagation environment.
Zhenyu Kang, Changsheng You, Rui Zhang
semanticscholar   +1 more source

Tribal gaps in Malaria in relation to KAP in East Godavari District, Andhra Pradesh

open access: yesJournal of Family Medicine and Primary Care, 2023
Objectives: To assess the level of GAPS in knowledge, attitudes and practices among tribal people regarding malaria disease. To assess the interassociation among knowledge, attitude and practices of scores.
Kothapalle Sowmya Sudha   +4 more
doaj   +1 more source

When UAV Meets IRS: Expanding Air-Ground Networks via Passive Reflection

open access: yesIEEE wireless communications, 2021
Thanks to their flexibility and mobility, unmanned aerial vehicles (UAVs) have been widely applied in wireless networks. However, UAV communications may suffer from blockage and eavesdropping in practical scenarios due to the complex environment.
Xiaowei Pang   +5 more
semanticscholar   +1 more source

IRS Aided MEC Systems With Binary Offloading: A Unified Framework for Dynamic IRS Beamforming [PDF]

open access: yesIEEE Journal on Selected Areas in Communications, 2022
In this paper, we develop a unified dynamic intelligent reflecting surface (IRS) beamforming framework to boost the sum computation rate of an IRS-aided mobile edge computing (MEC) system, where each device follows a binary offloading policy ...
Guangji Chen   +4 more
semanticscholar   +1 more source

A Simple Design of IRS-NOMA Transmission [PDF]

open access: yesIEEE Communications Letters, 2019
This letter proposes a simple design of intelligent reflecting surface (IRS) assisted non-orthogonal multiple access (NOMA) downlink transmission. In particular, conventional spatial division multiple access (SDMA) is used first at the base station to ...
Z. Ding, Vincent H. Poor
semanticscholar   +1 more source

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